Optical transmission system using raman optical amplification
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United States of America Patent
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Oct 30, 2012
Grant Date -
Dec 31, 2009
app pub date -
Jun 11, 2009
filing date -
Jun 26, 2008
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An optical transmission system using Raman optical amplification, which is configured in a WDM-PON topology where a signal light between an optical line terminal and each of optical network units is multi/demultiplexed at a WDM. The optical line terminal supplies continuous lights having wavelengths to the optical network units through an optical fiber from the optical line terminal. The continuous lights are used for an uplink signal. In addition, the optical line terminal outputs a pumping light having a wavelength which is used to excite lights of the continuous lights, to the optical fiber from the optical line terminal.
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